This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.

• Position: full sun
• Soil: fertile, moist but well-drained soil
• Rate of growth: average
• Flowering period: May to September
• Hardiness: frost hardy (may need winter protection)
  
  A profusion of glowing white flowers form on these low-growing plants over several months from late spring. They look wonderful when planted en-masse in a sunny border, but are also excellent for pots.
  
  
• Garden care: Divide congested plants in early spring or late summer. Protect young plants from slugs and snails. Trim after flowering. Protect from excessive cold or winter wet.